Scanning
- As a general rule, scanning slides and negatives at 2000 dpi should give you the equivalent of a 6-megapixel photo, which is satisfactory for most standard print sizes. Many scanners go up to about 4000 dpi, and the higher resolution is a lifesaver if you’re intent on making high-quality prints from cropped photos. If all you care about is sharing photos online (such as on Facebook), then you can make do with a much lower resolution, such as 800 dpi.